Netopia R910 User Reference Manual page 183

Routers B and C (which could also be Netopia R910s) serve the two remote networks that are subnets of
a.b.c.0. The subnetting is accomplished by configuring the Netopia R910 with connection profiles for Routers B
and C (see the following table).
Connection profile
For Router B
For Router C
The Netopia R910's connection profiles for Routers B and C create entries in its IP routing table. One entry
points to the subnet a.b.c.128, while a second entry points to the subnet a.b.c.248. The IP routing table might
look similar to the following:
a.b.c.16
a.b.c.1
Router B
a.b.c.128
a.b.c.129
Remote IP address
a.b.c.128
a.b.c.248
Internet
Router A
a.b.c.0
a.b.c.2
Router C
a.b.c.248
a.b.c.249
Remote IP mask
255.255.255.192
255.255.255.248
Understanding IP Addressing B-183
Bits available for host
address
7
3